Adsorption of Polymer-JR—sodium-dodecyl-sulfate complex on the surface of alumina

Arnold, George B.; Breuer, M. M.

doi:10.1016/0166-6622(85)80009-3

Cited by 18 publications

(15 citation statements)

References 14 publications

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“…In basic pH media, SDBS increases the catam1 adsorption while a decreasing trend was noted in the presence of HPyBr and TX-100. The enhanced levels of adsorption of a cationic polymer in the presence of sodium dodecyl sulfonate were also observed by Moudgil and Somasundaran (22) and Arnold and Bruer (39).…”

Section: Resultssupporting

confidence: 72%

Adsorption behavior of surfactant‐polyacrylamide mixtures with kaolin

Sastry¹,

Dave²

1999

J Surfact & Detergents

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The adsorption behavior of three surfactantshexadecylpyridinium bromide (HPyBr), sodium dodecylbenzene sulfonate (SDBS), and Triton X-100 (TX-100)-on kaolin from aqueous solution is monitored as a function of pH. The nature and shape of the adsorption isotherms are typical and highly dependent on the surfactant structure. All three surfactants adsorb on kaolin beyond the limits of monolayer coverage. Isotherms for HPyBr fit the Langmuir equation well. SDBS isotherms are typical of a two-stage process, and TX-100 adsorption isotherms are Sshaped. The pH-sensitive adsorption of each surfactant and the models used to represent the isotherms are considered together in explaining the mechanism of adsorption in each case. The complex mixture adsorption behavior from polyacrylamide-surfactant mixtures is also determined in acidic and basic pH media. Three polyacrylamides, catam1, anam1 and nonam1, are chosen to represent cationic, anionic, and nonionic polymers, respectively. Both competitive and synergistic effects are noted in the mixture adsorption depending upon the polymer-surfactant pair and the mode of introduction of a second component in the presence of another. The results are explained by considering various factors such as changes in the nature of solvent power of the media, interaction between the polymer and surfactant in the bulk solution as well as at the kaolin surface, blocking of surface sites by a preadsorbed component, and the change in the conformation state of polymer chains Paper no. S1126 in JSD 2, 459-472 (October 1999).KEY WORDS: Adsorption mechanism, competitive and synergistic effects, individual and mixture adsorption, kaolin, polyacrylamides, surfactants.Adsorption of surfactants at the solid-liquid interface is of broad interest in different fields of application, such as ore flotation, tertiary oil recovery, detergents, cosmetics, and pharmaceuticals (1-5). The efficiency of a surfactant in any of these application areas is due to the high surface activity of the surfactant at the solid-liquid interface. Also, loss of surfactants has been reported when they are used in tertiary oil-recovery processes, in which surfactant micellar solutions are injected into the rock formation to release trapped oil. Surfactant loss is traced mainly to its adsorption on to rock formations or other porous solid minerals like clay. Moreover, the surfactants are well-characterized model substances in establishing and understanding their adsorption mechanism on oppositely charged hydrophilic and hydrophobic substrates, oleophobic and uncharged hydrophobic surfaces, etc. Hence, the adsorption studies of surfactants not only are of an academic interest but also have great techno-economic value. Kaolin is a reactive clay mineral and is an important and unique substrate with a capacity to adsorb positively charged, negatively charged, and even uncharged surfactant species. The surface chemistry of kaolin is unique and it is now well known that its surface is heterogeneous in nature and has both cation and anion e...

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Section: Resultssupporting

confidence: 72%

Adsorption behavior of surfactant‐polyacrylamide mixtures with kaolin

Sastry¹,

Dave²

1999

J Surfact & Detergents

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“…In the case of hematite, the order of addition of polyelectrolyte and surfactant was found to be important; with quartz the polyacrylamide adsorption was not affected by dodecyl sulfonate adsorption even though surfactant adsorption was modified. Synergistic polyelectrolyte/surfactant adsorption on alumina has been reported by Arnold and Breuer for the case of sodium dodecanesulfonate in conjunction with a cationic cellulose ester polyelectrolyte, JR400. Modification of solution conditions however resulted in increased adsorption of either solute with corresponding inhibition of the other.…”

Section: Introductionmentioning

confidence: 78%

Coadsorption of Poly(styrenesulfonate) and Cetyltrimethylammonium Bromide on Silica Investigated by Attenuated Total Reflection Techniques

et al. 1997

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Adsorption of poly(styrenesulfonate) (PSS) and cetyltrimethylammonium bromide (CTAB) on silica from mixed solutions of the polyelectrolyte and surfactant has been studied. The surface excess of the polyelectrolyte was determined by ultraviolet attenuated total reflectance (UV-ATR) monitoring of the 224 nm styrenesulfonate absorbance band. Complementary information was derived from infrared attenuated total reflectance (IR-ATR) on the same system. Deconvolution of the 2920 cm-1 asymmetric and 2850 cm-1 symmetric methylene bands common to both surfactant and polyelectrolyte gave the adsorbed amount of surfactant, as well as a measure of adsorbed polyelectrolyte. The surface excesses of both polymer and surfactant were determined in situ for different pH values and solution histories. The adsorbed amount of both species was highly dependent on pH and on the order of addition of the polyelectrolyte and surfactant. These results are interpreted in terms of competing interactions between the polyelectrolyte and the surface and between the surfactant and the surface and in terms of cooperative surfactant/polyelectrolyte solution interactions.

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“…Binding isotherms depict the degree of binding (β), which is the ratio of the concentration of bound surfactant to the concentration of polyion charges. Therefore as β approaches 1, the polyelectrolyte is fully saturated with surfactant [23,87,88,89]. Non-cooperative binding occurs at very low amounts of surfactant added to the polyelectrolyte (dilute), before cooperative binding and can be difficult to resolve experimentally [87,90].…”

Section: Interactions Of Polyelectrolytes and Surfactants In The Bmentioning

confidence: 99%

Intermolecular Interactions in Polyelectrolyte and Surfactant Complexes in Solution

2018

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Polyelectrolytes are an important class of polymeric materials and are increasingly used in complex industrial formulations. A core use of these materials is in mixtures with surfactants, where a combination of hydrophobic and electrostatic interactions drives unique solution behavior and structure formation. In this review, we apply a molecular level perspective to the broad literature on polyelectrolyte-surfactant complexes, discussing explicitly the hydrophobic and electrostatic interaction contributions to polyelectrolyte surfactant complexes (PESCs), as well as the interplay between the two molecular interaction types. These interactions are sensitive to a variety of solution conditions, such as pH, ionic strength, mixing procedure, charge density, etc. and these parameters can readily be used to control the concentration at which structures form as well as the type of structure in the bulk solution.

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Adsorption of Polymer-JR—sodium-dodecyl-sulfate complex on the surface of alumina

Cited by 18 publications

References 14 publications

Adsorption behavior of surfactant‐polyacrylamide mixtures with kaolin

Adsorption behavior of surfactant‐polyacrylamide mixtures with kaolin

Coadsorption of Poly(styrenesulfonate) and Cetyltrimethylammonium Bromide on Silica Investigated by Attenuated Total Reflection Techniques

Intermolecular Interactions in Polyelectrolyte and Surfactant Complexes in Solution

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